* {
  padding: 0;
  margin: 0;
}

body,
html,
#app {
  height: 100%;
  width: 100%;
  overflow: hidden;
}
/* 
#app {
  width: 5040px;
  height: 1620px;
  transform-origin: left top;
} */

div {
  box-sizing: border-box;
}

.flex {
  display: flex;
  justify-content: space-between;
  box-sizing: border-box;
}